Primer



Sept. 23 1924.

G.'| KARR PRIMER l Filed Aug. '7

Ll-Li Patented Sept. 23, 1924.

UNITED STATES PATENT OFFICE.

GLEN L. KARR, 0F ROYAL OAK, MICHIGAN, ASSIGNR 0F ONE-THIRD T0 CHARLES L. BUTTERFIELD AND ONE-THIRD T0 JONAS SAWDON, BOTH 0F GRAND LEDGE,

MICHIGAN.

PRIMER.

Application filed August 7, 1922. Serial No. 580,105.

To all whom it may concern:

Be it known that I, GLEN L. KARR, a citi- Zen of the United States of America, residing at Royal Oak, in the county of Oakland and State of htlichigan, have invented certain new and useful Improvements in Primers, of which the following is a specification, reference being had therein to the accompanying drawings.

rIhis invention relates to a priming device and my invention aims to provide a device by which gasolene, kerosene or other fuel may be atomized within the intake manifold of an internal combustion engine, the atomizing of the fuel being accomplished by a centrifugal force set up by an electric motor constructed so that the fuel may pass axially thereof and thus permit of the motor being attached to the intake manifold of an engine to occupy a comparatively small space relative thereto and not interfere with any other accessories of the engine.

My `invention further aims to provide a motor driven fuel injector wherein a valve controls the injection of fuel and a switch associated with said valve controls the operation of the motor, thus providing a synchronous control which avoids waste of fuel and electrical energy.

My invention still further aims to provide a manifold,attachment kfor an internal com.- bustion engine by which fuel may be injected into the manifold and atomized therein to afford an initial charge to one or more cylinders of an engine and thus facilitate starting the engine or operating the engine until the engine may be served by the main supply of fuel.

The construction of my priming device will be hereinafter specifically described andv then claimed and reference will now be had to the drawings, whereinj Figure 1 is a. plan of a portion of an internal combustion engine provided with a priming device in accordance with my invention;

Fig. 2 is a longitudinal sectional view of the priming device, on a large scale, relative to the intake manifold of an engine, and

Figs. 3 and 4 are plans of single jet noz- Zles that may be used in connection with my device.

In the drawing, the reference numeral 1 denotes a portion of a conventional form of internal combustion engine having an intake manifold 2 adapted to receive vaporized fuel from a carburetor or other fuel supply device. r1`he side wall 0f the intake manifold 2 is provided with an opening 3 and mounted in said opening or otherwise supported from the intake manifold 2 is the end wall 4 of an electric motor 5. As shown, the end wall 4 has a central boss or bearing portion 6 with a reduced exteriorly screwthreaded end 7 which is mounted in the opening 3 and in its present form constitutes the sole supporting means of the electric motor 5.

The motor 5 includes, among other things, a lield 8, pole pieces 9, an armature 10, a commutator 11, and brushes 12. The armature 10 is mounted on a sleeve 13 having one end thereof journaled in the outer end wall 14 of the motor and extending through said sleeve is a tubular shaft or conduit 15 which has its outer end in a stuffing box 16 of the end wall 4 and its opposite end eX- tending through the bearing 6 into the intake manifold 2. The inner wall of the tubular `shaft or conduit 15 has a spiral groove or way 17 adapted to impart a whirling or sinuous motion to fluid passing through the conduit, .and on the inner end of the conduit is a hollow head 1S having its periphery provided with a plurality of radially disposed jets 19 from which fuel is discharged by centrifugal force. In lieu of the head 18 I may use a head 20 having a single jet 21 or I may use an elbow 22 reduced to form a jet 23. In either instance rotation of the discharge heads will cause fuel to bie-'ejected in an atomized form into the intake manifold 2 from where it may be drawn into the cylinders of the engine 1 for priming or starting purposes. It is the high speed or whirling action of the head 18 that causes liquid fuel to be atomized or placed in a finely divided state so that it may be drawn into the cylinders of the engine.

Suitably attached to the motor end wall 14 is a casing 24 and co-axial of said casing and supported thereby is a valve body 25 having aligning passages 26 into one of which eX- tends a tube 27 having a head 28 mounted in and communicating with the tubular shaft or conduit 15, said tube establishing communication between the valve body 25 and said conduit. The other passage 26 of the valve body communicates with a fuel supply pipe 29 and in the valve body is a rotatable ported plug 80 normally seated by the expansive force of a spring 31 and limited in its rotation by a stop pin 32 and shoulders 83. The upper end of the valve plug 3() has a stem 34 provided with a switch member 35 and a crank 36. The switch member 35 has a binding post 37 for a leading-in Wire 38 and said switch member is adapted to contact with a contact member 39 supported from the casing 24 and provided with a leadin Wire 40.

The crank 36 is connected by a link 41 to a bell crank 42 pivoted on the motor 5 and an operating rod 43 is connected to said bell crank, said operating rod extending to a suitable support 44, for instance a dash or instrument board of an automobile, so that the operator or driver of the automobile may conveniently open and close the fuel valve.

l/Vhen an engine is to be primed or started, the rod 43 is pulled upon and the motor switch. is closed in synehronism with opening of the valve, thereby placing the motor in operation while liquid fuel flows through the conduit 15 to be injected into the intake manifold 2 in an atomized condition, such condition being brought about by the fuel being projected into the manifold by centrifugal force. I attach considerable importance'to the fuel passing axially through the motor as such an arrangement obviates various connections and reduces the overall dimension of the device, which due to its compact form and small size can be conveniently supported from the intake manifold 2 of the engine.

, It is to be understood that the structural elements entering into my invention are susceptible to suoli changes as fallwithin the scope of the appended claims.

- Vhat I claim is:

1. In a priming device for an internal combustion engine, an intake manifold, an atomizing head in said intake manifold, a

vmotor for revolving said atomizing head,

andfuel supply means to said head extending axially of said motor.

2. A priming device as in claim 1, and means for simultaneously controlling the operation of said motor and the supply of fuel.

3. A priming device as in claim 1, wherein said motor is solely supported from said intake manifold.

4. Ina priming device for an internal combustion engine having an intake manifold, a motor connected to the manifold of said engine, fuel supply means extending through said motor into the engine mani fold, and means in the manifold of said engine operated by said motor for atomizing the fuel supplied through said motor to said engine manifold.

5. A priming` device as in claim 4, and means for simultaneously controlling the operation of said motor and the supply of fuel, therethrough.

6. Means adapted to atomize an auxiliary supply of fuel injected into an engine manil fold, said means comprising a motor, a discharge head coaxially of said motor and driven thereby, a fuel supply conduit communicating with said head, and a valve sup-l ported from Said motor and controlling the supply of fuel to said head.

7. Means adapted to atomize an auxiliary supply of fuel injected into an engine manifold, said means con'iprising a motor driven discharge head, a fuel supply conduit communicating with said head, a valve controlling the supply of fuel to said head, and means controlling the operation of said motor driven discharge head and artieulattal with said valve for operation in syehronism therewith.

8. The combination of an engine intake manifold, a conduit extending into said manifold from a. wall thereof, a discharge head on the inner end of said conduit adapted to discharge and atomize fuel by centrifugal force, means controlling a supply of fuel to said conduit, and electrical means about said conduit adapted to rotate sind conduit.

9. The combination of an engine intake manifold, an electric motor connected thereto, a conduit extending axially of said motor into said engine intake manifold and adapted to discharge fuel therein, a valve controlling the supply of fuel to said conduit, a switch controlling the operation of said motor, and means adapted for simultalleously operating said valve and said switch.

l0. The combination of an engine having a manifold adapted to receive an auxiliary supply of fuel for priming purposes, means adapted to atomize fuel by centrifugal force and supply it to the engine manifold, fuel supply means for said atomizing means, and a motor adapted to operate said aton'lizing means.

11. The combination of an engine intake manifold adapted to have air and atomized liquid fuel pass therethrough, a fuel atomizing head in said intake manifold and in the path of air and fuel, a supply of fuel .for said head, and means projecting into said manifold for revolving said head so that fuel will be atomized directly in said manifold.

In testimony whereof I affix my signature in presence of two witnesses.

GLEN L. KARR.

litnesses OTTO F. BAn'rHEL, (l1-IAS. L. BUTTERFIELD. 

